Breitling · Chronospace

Strap for Chronospace Military Blacksteel / Volcano Black / Military

Takes 24 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width24 mm
Case diameter46 mm
ReferenceM7836622.BD39.100W
FamilyChronospace
MovementBreitling caliber 78 Additional 12 hours Hand (adjustable), Additional 24 hours Hand (adjustable), hours, minutes, seconds | date, day, perpetual calendar | Chronograph | alarm | power reserve indicator, chronometer
Year2010
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Chronospace M7836622.BD39.100W

Selected for the 24 mm lug width · workshop selection

All 24 mm straps →

The Chronospace M7836622.BD39.100W, seen from the bench

The Breitling Chronospace M7836622.BD39.100W is a 46mm stainless steel professional aviation chronograph featuring the Breitling 78 caliber movement. This model integrates dual time zone capability, a 24-hour hand, power reserve indicator, perpetual calendar, and an independent chronograph function with over 40 hours of power reserve. The 24mm lug width is proportioned according to classic Swiss watchmaking standards and connects the Chronospace to Breitling's mid-to-large format collection, enabling access to the global aftermarket strap ecosystem.

Frequently asked questions

What is the lug width of the Breitling Chronospace M7836622.BD39.100W?

The Breitling Chronospace M7836622.BD39.100W is fitted with a 24mm lug width, a standard specification for medium-to-large format models in Breitling's catalogue. Correct measurement is taken perpendicularly between the internal shoulders of the lug, excluding the spring bar terminals. This specification grants access to a broad aftermarket compatible strap market.

Which strap pairs best with the Breitling Chronospace M7836622.BD39.100W?

Vegetable-tanned alligator is the ideal choice: the natural grain captures light in a non-reflective manner, appropriate for professional environments, and the coarse texture (50-60 scutes per square decimetre) prevents visual flattening under the weight of the 46mm case. Alternatively, satin English calfskin or NATO straps in cordura maintain the technical integrity of the model.

How do you change straps on a Breitling watch with 24mm lug width?

The procedure requires a specific tool: a spring bar removal tool or a thin-tipped flathead screwdriver. Insert the tool into the lateral hole of the spring bar, beneath the lug, press gently to release the spring and extract the pin. Once the lug is freed, insert the new strap by pressing until the spring bar snaps into the opposite holes. Care must be taken to avoid scratching the case.

Can the original strap on the Breitling Chronospace M7836622.BD39.100W be replaced with an aftermarket alternative?

Absolutely. The 24mm lug width is an industrial standard; any strap with this specification mounts without mechanical adaptation. Aftermarket straps in alligator, calfskin, rubber or fabric guarantee perfect compatibility. It is important to verify the internal width of the passant (which must exceed 24mm for smooth operation) and total length, which is customisable upon request from specialist strap makers.

How long does a leather strap last on a 46mm Breitling Chronospace?

Durability depends on material, tanning method and frequency of use. An alligator or calfskin strap under vegetable tanning, subjected to daily use, maintains structural integrity for 4–6 years; beyond this period, leather fibres begin to yield near the lug. Ageing accelerates if exposed to constant moisture or chemical solvents. A fabric NATO strap lasts 5–8 years. Periodic maintenance (cleaning with neutral detergent, conditioning with natural wax) significantly extends service life.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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